[people/ms/u-boot.git] / board / armltd / versatile / flash.c

/*
 * (C) Copyright 2001
 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
 *
 * (C) Copyright 2001-2004
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * (C) Copyright 2003
 * Texas Instruments, <www.ti.com>
 * Kshitij Gupta <Kshitij@ti.com>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <linux/byteorder/swab.h>

#define PHYS_FLASH_SECT_SIZE	0x00020000	/* 256 KB sectors (x2) */
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];	/* info for FLASH chips    */

/* Board support for 1 or 2 flash devices */
#define FLASH_PORT_WIDTH32
#undef FLASH_PORT_WIDTH16

#ifdef FLASH_PORT_WIDTH16
#define FLASH_PORT_WIDTH		ushort
#define FLASH_PORT_WIDTHV		vu_short
#define SWAP(x)			__swab16(x)
#else
#define FLASH_PORT_WIDTH		ulong
#define FLASH_PORT_WIDTHV		vu_long
#define SWAP(x)			__swab32(x)
#endif

#define FPW	FLASH_PORT_WIDTH
#define FPWV	FLASH_PORT_WIDTHV

#define mb() __asm__ __volatile__ ("" : : : "memory")


/* Flash Organization Structure */
typedef struct OrgDef {
	unsigned int sector_number;
	unsigned int sector_size;
} OrgDef;


/* Flash Organizations */
OrgDef OrgIntel_28F256K3[] = {
	{256, 128 * 1024},		/* 256 * 128kBytes sectors */
};


/*-----------------------------------------------------------------------
 * Functions
 */
unsigned long flash_init (void);
static ulong flash_get_size (FPW * addr, flash_info_t * info);
static int write_data (flash_info_t * info, ulong dest, FPW data);
static void flash_get_offsets (ulong base, flash_info_t * info);
void inline spin_wheel (void);
void flash_print_info (flash_info_t * info);
void flash_unprotect_sectors (FPWV * addr);
int flash_erase (flash_info_t * info, int s_first, int s_last);
int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt);

/*-----------------------------------------------------------------------
 */

static void flash_vpp(int on)
{
	unsigned int tmp;

	tmp = *(unsigned int *)(VERSATILE_FLASHCTRL);

	if (on)
	    tmp |= VERSATILE_FLASHPROG_FLVPPEN;
	else
	    tmp &= ~VERSATILE_FLASHPROG_FLVPPEN;

	*(unsigned int *)(VERSATILE_FLASHCTRL) = tmp;
}

unsigned long flash_init (void)
{
	int i;
	ulong size = 0;
	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
		switch (i) {
		case 0:
		        flash_vpp(1);
			flash_get_size ((FPW *) PHYS_FLASH_1, &flash_info[i]);
			flash_get_offsets (PHYS_FLASH_1, &flash_info[i]);
			flash_vpp(0);
			break;
		default:
			panic ("configured too many flash banks!\n");
			break;
		}
		size += flash_info[i].size;
	}

	/* Protect monitor and environment sectors
	 */
	flash_protect (FLAG_PROTECT_SET,
			CONFIG_SYS_FLASH_BASE,
			CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1, &flash_info[0]);

	return size;
}

/*-----------------------------------------------------------------------
 */
static void flash_get_offsets (ulong base, flash_info_t * info)
{
	int i;
	OrgDef *pOrgDef;

	pOrgDef = OrgIntel_28F256K3;
	if (info->flash_id == FLASH_UNKNOWN) {
		return;
	}

	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
		for (i = 0; i < info->sector_count; i++) {
			if (i > 255) {
				info->start[i] = base + (i * 0x8000);
				info->protect[i] = 0;
			} else {
				info->start[i] = base +
						(i * PHYS_FLASH_SECT_SIZE);
				info->protect[i] = 0;
			}
		}
	}
}

/*-----------------------------------------------------------------------
 */
void flash_print_info (flash_info_t * info)
{
	int i;

	if (info->flash_id == FLASH_UNKNOWN) {
		printf ("missing or unknown FLASH type\n");
		return;
	}

	switch (info->flash_id & FLASH_VENDMASK) {
	case FLASH_MAN_INTEL:
		printf ("INTEL ");
		break;
	default:
		printf ("Unknown Vendor ");
		break;
	}

	switch (info->flash_id & FLASH_TYPEMASK) {
	case FLASH_28F256L18T:
		printf ("FLASH 28F256L18T\n");
		break;
	case FLASH_28F256K3:
		printf ("FLASH 28F256K3\n");
		break;
	default:
		printf ("Unknown Chip Type\n");
		break;
	}

	printf ("  Size: %ld MB in %d Sectors\n",
			info->size >> 20, info->sector_count);

	printf ("  Sector Start Addresses:");
	for (i = 0; i < info->sector_count; ++i) {
		if ((i % 5) == 0)
			printf ("\n   ");
		printf (" %08lX%s",
			info->start[i], info->protect[i] ? " (RO)" : "     ");
	}
	printf ("\n");
	return;
}

/*
 * The following code cannot be run from FLASH!
 */
static ulong flash_get_size (FPW * addr, flash_info_t * info)
{
	volatile FPW value;

	/* Write auto select command: read Manufacturer ID */
	addr[0x5555] = (FPW) 0x00AA00AA;
	addr[0x2AAA] = (FPW) 0x00550055;
	addr[0x5555] = (FPW) 0x00900090;

	mb ();
	value = addr[0];
	switch (value) {

	case (FPW) INTEL_MANUFACT:
		info->flash_id = FLASH_MAN_INTEL;
		break;

	default:
		info->flash_id = FLASH_UNKNOWN;
		info->sector_count = 0;
		info->size = 0;
		addr[0] = (FPW) 0x00FF00FF;	/* restore read mode */
		return (0);		/* no or unknown flash  */
	}

	mb ();
	value = addr[1];	/* device ID        */
	switch (value) {

	case (FPW) (INTEL_ID_28F256L18T):
		info->flash_id += FLASH_28F256L18T;
		info->sector_count = 259;
		info->size = 0x02000000;
		break;			/* => 32 MB     */

	case (FPW)(INTEL_ID_28F256K3):
		info->flash_id += FLASH_28F256K3;
		info->sector_count = 256;
		info->size = 0x02000000;
		break;

	default:
		info->flash_id = FLASH_UNKNOWN;
		break;
	}

	if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
		printf ("** ERROR: sector count %d > max (%d) **\n",
				info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
		info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
	}

	addr[0] = (FPW) 0x00FF00FF;	/* restore read mode */

	return (info->size);
}


/* unprotects a sector for write and erase
 * on some intel parts, this unprotects the entire chip, but it
 * wont hurt to call this additional times per sector...
 */
void flash_unprotect_sectors (FPWV * addr)
{
#define PD_FINTEL_WSMS_READY_MASK    0x0080

	*addr = (FPW) 0x00500050;	/* clear status register */

	/* this sends the clear lock bit command */
	*addr = (FPW) 0x00600060;
	*addr = (FPW) 0x00D000D0;
}


/*-----------------------------------------------------------------------
 */

int flash_erase (flash_info_t * info, int s_first, int s_last)
{
	int flag, prot, sect;
	ulong type, start, last;
	int rcode = 0;

	if ((s_first < 0) || (s_first > s_last)) {
		if (info->flash_id == FLASH_UNKNOWN) {
			printf ("- missing\n");
		} else {
			printf ("- no sectors to erase\n");
		}
		return 1;
	}

	type = (info->flash_id & FLASH_VENDMASK);
	if ((type != FLASH_MAN_INTEL)) {
		printf ("Can't erase unknown flash type %08lx - aborted\n",
				info->flash_id);
		return 1;
	}

	prot = 0;
	for (sect = s_first; sect <= s_last; ++sect) {
		if (info->protect[sect]) {
			prot++;
		}
	}

	if (prot) {
		printf ("- Warning: %d protected sectors will not be erased!\n",
				prot);
	} else {
		printf ("\n");
	}

	flash_vpp(1);

	start = get_timer (0);
	last = start;

	/* Disable interrupts which might cause a timeout here */
	flag = disable_interrupts ();

	/* Start erase on unprotected sectors */
	for (sect = s_first; sect <= s_last; sect++) {
		if (info->protect[sect] == 0) {	/* not protected */
			FPWV *addr = (FPWV *) (info->start[sect]);
			FPW status;

			printf ("Erasing sector %2d ... ", sect);

			flash_unprotect_sectors (addr);

			/* arm simple, non interrupt dependent timer */
			reset_timer_masked ();

			*addr = (FPW) 0x00500050;/* clear status register */
			*addr = (FPW) 0x00200020;/* erase setup */
			*addr = (FPW) 0x00D000D0;/* erase confirm */

			while (((status =
				*addr) & (FPW) 0x00800080) !=
				(FPW) 0x00800080) {
					if (get_timer_masked () >
					CONFIG_SYS_FLASH_ERASE_TOUT) {
					printf ("Timeout\n");
					/* suspend erase     */
					*addr = (FPW) 0x00B000B0;
					/* reset to read mode */
					*addr = (FPW) 0x00FF00FF;
					rcode = 1;
					break;
				}
			}

			/* clear status register cmd.   */
			*addr = (FPW) 0x00500050;
			*addr = (FPW) 0x00FF00FF;/* resest to read mode */
			printf (" done\n");
		}
	}

	flash_vpp(0);

	return rcode;
}

/*-----------------------------------------------------------------------
 * Copy memory to flash, returns:
 * 0 - OK
 * 1 - write timeout
 * 2 - Flash not erased
 * 4 - Flash not identified
 */

int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
{
	ulong cp, wp;
	FPW data;
	int count, i, l, rc, port_width;

	if (info->flash_id == FLASH_UNKNOWN) {
		return 4;
	}
/* get lower word aligned address */
#ifdef FLASH_PORT_WIDTH16
	wp = (addr & ~1);
	port_width = 2;
#else
	wp = (addr & ~3);
	port_width = 4;
#endif

	flash_vpp(1);

	/*
	 * handle unaligned start bytes
	 */
	if ((l = addr - wp) != 0) {
		data = 0;
		for (i = 0, cp = wp; i < l; ++i, ++cp) {
			data = (data << 8) | (*(uchar *) cp);
		}
		for (; i < port_width && cnt > 0; ++i) {
			data = (data << 8) | *src++;
			--cnt;
			++cp;
		}
		for (; cnt == 0 && i < port_width; ++i, ++cp) {
			data = (data << 8) | (*(uchar *) cp);
		}

		if ((rc = write_data (info, wp, SWAP (data))) != 0) {
			flash_vpp(0);
			return (rc);
		}
		wp += port_width;
	}

	/*
	 * handle word aligned part
	 */
	count = 0;
	while (cnt >= port_width) {
		data = 0;
		for (i = 0; i < port_width; ++i) {
			data = (data << 8) | *src++;
		}
		if ((rc = write_data (info, wp, SWAP (data))) != 0) {
			flash_vpp(0);
			return (rc);
		}
		wp += port_width;
		cnt -= port_width;
		if (count++ > 0x800) {
			spin_wheel ();
			count = 0;
		}
	}

	if (cnt == 0) {
		flash_vpp(0);
		return (0);
	}

	/*
	 * handle unaligned tail bytes
	 */
	data = 0;
	for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) {
		data = (data << 8) | *src++;
		--cnt;
	}
	for (; i < port_width; ++i, ++cp) {
		data = (data << 8) | (*(uchar *) cp);
	}

	rc = write_data (info, wp, SWAP (data));

	flash_vpp(0);

	return rc;
}

/*-----------------------------------------------------------------------
 * Write a word or halfword to Flash, returns:
 * 0 - OK
 * 1 - write timeout
 * 2 - Flash not erased
 */
static int write_data (flash_info_t * info, ulong dest, FPW data)
{
	FPWV *addr = (FPWV *) dest;
	ulong status;
	int flag;

	/* Check if Flash is (sufficiently) erased */
	if ((*addr & data) != data) {
		printf ("not erased at %08lx (%lx)\n", (ulong) addr, (ulong) *addr);
		return (2);
	}

	flash_vpp(1);

	flash_unprotect_sectors (addr);
	/* Disable interrupts which might cause a timeout here */
	flag = disable_interrupts ();
	*addr = (FPW) 0x00400040;	/* write setup */
	*addr = data;

	/* arm simple, non interrupt dependent timer */
	reset_timer_masked ();

	/* wait while polling the status register */
	while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
		if (get_timer_masked () > CONFIG_SYS_FLASH_WRITE_TOUT) {
			*addr = (FPW) 0x00FF00FF;	/* restore read mode */
			flash_vpp(0);
			return (1);
		}
	}
	*addr = (FPW) 0x00FF00FF;	/* restore read mode */
	flash_vpp(0);
	return (0);
}

void inline spin_wheel (void)
{
	static int p = 0;
	static char w[] = "\\/-";

	printf ("\010%c", w[p]);
	(++p == 3) ? (p = 0) : 0;
}
Commit	Line	Data
3d3befa7 WD	1	/*
	2	* (C) Copyright 2001
	3	* Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
	4	*
	5	* (C) Copyright 2001-2004
	6	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	7	*
	8	* (C) Copyright 2003
	9	* Texas Instruments, <www.ti.com>
	10	* Kshitij Gupta <Kshitij@ti.com>
	11	*
	12	* See file CREDITS for list of people who contributed to this
	13	* project.
	14	*
	15	* This program is free software; you can redistribute it and/or
	16	* modify it under the terms of the GNU General Public License as
	17	* published by the Free Software Foundation; either version 2 of
	18	* the License, or (at your option) any later version.
	19	*
	20	* This program is distributed in the hope that it will be useful,
	21	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	22	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	23	* GNU General Public License for more details.
	24	*
	25	* You should have received a copy of the GNU General Public License
	26	* along with this program; if not, write to the Free Software
	27	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	28	* MA 02111-1307 USA
	29	*/
	30
	31	#include <common.h>
	32	#include <linux/byteorder/swab.h>
	33
	34	#define PHYS_FLASH_SECT_SIZE 0x00020000 /* 256 KB sectors (x2) */
6d0f6bcf	35	flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
3d3befa7 WD	36
3d3befa7 WD	37	/* Board support for 1 or 2 flash devices */
d407bf52 WD	38	#define FLASH_PORT_WIDTH32
d407bf52 WD	39	#undef FLASH_PORT_WIDTH16
3d3befa7 WD	40
	41	#ifdef FLASH_PORT_WIDTH16
	42	#define FLASH_PORT_WIDTH ushort
	43	#define FLASH_PORT_WIDTHV vu_short
	44	#define SWAP(x) __swab16(x)
	45	#else
	46	#define FLASH_PORT_WIDTH ulong
	47	#define FLASH_PORT_WIDTHV vu_long
	48	#define SWAP(x) __swab32(x)
	49	#endif
	50
	51	#define FPW FLASH_PORT_WIDTH
	52	#define FPWV FLASH_PORT_WIDTHV
	53
	54	#define mb() __asm__ __volatile__ ("" : : : "memory")
	55
	56
	57	/* Flash Organization Structure */
	58	typedef struct OrgDef {
	59	unsigned int sector_number;
	60	unsigned int sector_size;
	61	} OrgDef;
	62
	63
	64	/* Flash Organizations */
d407bf52 WD	65	OrgDef OrgIntel_28F256K3[] = {
d407bf52 WD	66	{256, 128 * 1024}, /* 256 * 128kBytes sectors */
3d3befa7 WD	67	};
	68
	69
	70	/*-----------------------------------------------------------------------
	71	* Functions
	72	*/
	73	unsigned long flash_init (void);
	74	static ulong flash_get_size (FPW * addr, flash_info_t * info);
	75	static int write_data (flash_info_t * info, ulong dest, FPW data);
	76	static void flash_get_offsets (ulong base, flash_info_t * info);
	77	void inline spin_wheel (void);
	78	void flash_print_info (flash_info_t * info);
	79	void flash_unprotect_sectors (FPWV * addr);
	80	int flash_erase (flash_info_t * info, int s_first, int s_last);
	81	int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt);
	82
	83	/*-----------------------------------------------------------------------
	84	*/
	85
d407bf52 WD	86	static void flash_vpp(int on)
	87	{
	88	unsigned int tmp;
	89
	90	tmp = (unsigned int )(VERSATILE_FLASHCTRL);
	91
	92	if (on)
	93	tmp \|= VERSATILE_FLASHPROG_FLVPPEN;
	94	else
53677ef1	95	tmp &= ~VERSATILE_FLASHPROG_FLVPPEN;
d407bf52 WD	96
	97	(unsigned int )(VERSATILE_FLASHCTRL) = tmp;
	98	}
	99
3d3befa7 WD	100	unsigned long flash_init (void)
	101	{
	102	int i;
	103	ulong size = 0;
6d0f6bcf	104	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
3d3befa7 WD	105	switch (i) {
3d3befa7 WD	106	case 0:
d407bf52	107	flash_vpp(1);
3d3befa7 WD	108	flash_get_size ((FPW *) PHYS_FLASH_1, &flash_info[i]);
3d3befa7 WD	109	flash_get_offsets (PHYS_FLASH_1, &flash_info[i]);
d407bf52	110	flash_vpp(0);
3d3befa7 WD	111	break;
	112	default:
	113	panic ("configured too many flash banks!\n");
	114	break;
	115	}
	116	size += flash_info[i].size;
	117	}
	118
	119	/* Protect monitor and environment sectors
	120	*/
	121	flash_protect (FLAG_PROTECT_SET,
6d0f6bcf JCPV	122	CONFIG_SYS_FLASH_BASE,
6d0f6bcf JCPV	123	CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1, &flash_info[0]);
3d3befa7 WD	124
	125	return size;
	126	}
	127
	128	/*-----------------------------------------------------------------------
	129	*/
	130	static void flash_get_offsets (ulong base, flash_info_t * info)
	131	{
	132	int i;
	133	OrgDef *pOrgDef;
	134
d407bf52	135	pOrgDef = OrgIntel_28F256K3;
3d3befa7 WD	136	if (info->flash_id == FLASH_UNKNOWN) {
	137	return;
	138	}
	139
	140	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
	141	for (i = 0; i < info->sector_count; i++) {
	142	if (i > 255) {
	143	info->start[i] = base + (i * 0x8000);
	144	info->protect[i] = 0;
	145	} else {
	146	info->start[i] = base +
	147	(i * PHYS_FLASH_SECT_SIZE);
	148	info->protect[i] = 0;
	149	}
	150	}
	151	}
	152	}
	153
	154	/*-----------------------------------------------------------------------
	155	*/
	156	void flash_print_info (flash_info_t * info)
	157	{
	158	int i;
	159
	160	if (info->flash_id == FLASH_UNKNOWN) {
	161	printf ("missing or unknown FLASH type\n");
	162	return;
	163	}
	164
	165	switch (info->flash_id & FLASH_VENDMASK) {
	166	case FLASH_MAN_INTEL:
	167	printf ("INTEL ");
	168	break;
	169	default:
	170	printf ("Unknown Vendor ");
	171	break;
	172	}
	173
	174	switch (info->flash_id & FLASH_TYPEMASK) {
	175	case FLASH_28F256L18T:
	176	printf ("FLASH 28F256L18T\n");
	177	break;
d407bf52 WD	178	case FLASH_28F256K3:
	179	printf ("FLASH 28F256K3\n");
	180	break;
3d3befa7 WD	181	default:
	182	printf ("Unknown Chip Type\n");
	183	break;
	184	}
	185
	186	printf (" Size: %ld MB in %d Sectors\n",
	187	info->size >> 20, info->sector_count);
	188
	189	printf (" Sector Start Addresses:");
	190	for (i = 0; i < info->sector_count; ++i) {
	191	if ((i % 5) == 0)
	192	printf ("\n ");
	193	printf (" %08lX%s",
	194	info->start[i], info->protect[i] ? " (RO)" : " ");
	195	}
	196	printf ("\n");
	197	return;
	198	}
	199
	200	/*
	201	* The following code cannot be run from FLASH!
	202	*/
	203	static ulong flash_get_size (FPW * addr, flash_info_t * info)
	204	{
	205	volatile FPW value;
	206
	207	/* Write auto select command: read Manufacturer ID */
	208	addr[0x5555] = (FPW) 0x00AA00AA;
	209	addr[0x2AAA] = (FPW) 0x00550055;
	210	addr[0x5555] = (FPW) 0x00900090;
	211
	212	mb ();
	213	value = addr[0];
3d3befa7 WD	214	switch (value) {
	215
	216	case (FPW) INTEL_MANUFACT:
	217	info->flash_id = FLASH_MAN_INTEL;
	218	break;
	219
	220	default:
	221	info->flash_id = FLASH_UNKNOWN;
	222	info->sector_count = 0;
	223	info->size = 0;
	224	addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
	225	return (0); /* no or unknown flash */
	226	}
	227
	228	mb ();
	229	value = addr[1]; /* device ID */
	230	switch (value) {
	231
	232	case (FPW) (INTEL_ID_28F256L18T):
	233	info->flash_id += FLASH_28F256L18T;
	234	info->sector_count = 259;
	235	info->size = 0x02000000;
	236	break; /* => 32 MB */
	237
d407bf52 WD	238	case (FPW)(INTEL_ID_28F256K3):
	239	info->flash_id += FLASH_28F256K3;
	240	info->sector_count = 256;
	241	info->size = 0x02000000;
d407bf52 WD	242	break;
d407bf52 WD	243
3d3befa7 WD	244	default:
	245	info->flash_id = FLASH_UNKNOWN;
	246	break;
	247	}
	248
6d0f6bcf	249	if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) {
3d3befa7	250	printf (" ERROR: sector count %d > max (%d) \n",
6d0f6bcf JCPV	251	info->sector_count, CONFIG_SYS_MAX_FLASH_SECT);
6d0f6bcf JCPV	252	info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
3d3befa7 WD	253	}
	254
	255	addr[0] = (FPW) 0x00FF00FF; /* restore read mode */
	256
	257	return (info->size);
	258	}
	259
	260
	261	/* unprotects a sector for write and erase
	262	* on some intel parts, this unprotects the entire chip, but it
	263	* wont hurt to call this additional times per sector...
	264	*/
	265	void flash_unprotect_sectors (FPWV * addr)
	266	{
	267	#define PD_FINTEL_WSMS_READY_MASK 0x0080
	268
	269	addr = (FPW) 0x00500050; / clear status register */
	270
	271	/* this sends the clear lock bit command */
	272	*addr = (FPW) 0x00600060;
	273	*addr = (FPW) 0x00D000D0;
	274	}
	275
	276
	277	/*-----------------------------------------------------------------------
	278	*/
	279
	280	int flash_erase (flash_info_t * info, int s_first, int s_last)
	281	{
	282	int flag, prot, sect;
	283	ulong type, start, last;
	284	int rcode = 0;
	285
	286	if ((s_first < 0) \|\| (s_first > s_last)) {
	287	if (info->flash_id == FLASH_UNKNOWN) {
	288	printf ("- missing\n");
	289	} else {
	290	printf ("- no sectors to erase\n");
	291	}
	292	return 1;
	293	}
	294
	295	type = (info->flash_id & FLASH_VENDMASK);
	296	if ((type != FLASH_MAN_INTEL)) {
	297	printf ("Can't erase unknown flash type %08lx - aborted\n",
	298	info->flash_id);
	299	return 1;
	300	}
	301
	302	prot = 0;
	303	for (sect = s_first; sect <= s_last; ++sect) {
	304	if (info->protect[sect]) {
	305	prot++;
	306	}
	307	}
	308
	309	if (prot) {
	310	printf ("- Warning: %d protected sectors will not be erased!\n",
	311	prot);
	312	} else {
	313	printf ("\n");
	314	}
	315
d407bf52	316	flash_vpp(1);
3d3befa7 WD	317
	318	start = get_timer (0);
	319	last = start;
	320
	321	/* Disable interrupts which might cause a timeout here */
	322	flag = disable_interrupts ();
	323
	324	/* Start erase on unprotected sectors */
	325	for (sect = s_first; sect <= s_last; sect++) {
	326	if (info->protect[sect] == 0) { /* not protected */
	327	FPWV addr = (FPWV ) (info->start[sect]);
	328	FPW status;
	329
	330	printf ("Erasing sector %2d ... ", sect);
	331
	332	flash_unprotect_sectors (addr);
	333
	334	/* arm simple, non interrupt dependent timer */
	335	reset_timer_masked ();
	336
	337	addr = (FPW) 0x00500050;/ clear status register */
	338	addr = (FPW) 0x00200020;/ erase setup */
	339	addr = (FPW) 0x00D000D0;/ erase confirm */
	340
	341	while (((status =
	342	*addr) & (FPW) 0x00800080) !=
	343	(FPW) 0x00800080) {
	344	if (get_timer_masked () >
6d0f6bcf	345	CONFIG_SYS_FLASH_ERASE_TOUT) {
3d3befa7 WD	346	printf ("Timeout\n");
	347	/* suspend erase */
	348	*addr = (FPW) 0x00B000B0;
	349	/* reset to read mode */
	350	*addr = (FPW) 0x00FF00FF;
	351	rcode = 1;
	352	break;
	353	}
	354	}
	355
	356	/* clear status register cmd. */
	357	*addr = (FPW) 0x00500050;
	358	addr = (FPW) 0x00FF00FF;/ resest to read mode */
	359	printf (" done\n");
	360	}
	361	}
d407bf52 WD	362
	363	flash_vpp(0);
	364
3d3befa7 WD	365	return rcode;
	366	}
	367
	368	/*-----------------------------------------------------------------------
	369	* Copy memory to flash, returns:
	370	* 0 - OK
	371	* 1 - write timeout
	372	* 2 - Flash not erased
	373	* 4 - Flash not identified
	374	*/
	375
	376	int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
	377	{
	378	ulong cp, wp;
	379	FPW data;
	380	int count, i, l, rc, port_width;
	381
	382	if (info->flash_id == FLASH_UNKNOWN) {
	383	return 4;
	384	}
	385	/* get lower word aligned address */
	386	#ifdef FLASH_PORT_WIDTH16
	387	wp = (addr & ~1);
	388	port_width = 2;
	389	#else
	390	wp = (addr & ~3);
	391	port_width = 4;
	392	#endif
	393
d407bf52 WD	394	flash_vpp(1);
d407bf52 WD	395
3d3befa7 WD	396	/*
	397	* handle unaligned start bytes
	398	*/
	399	if ((l = addr - wp) != 0) {
	400	data = 0;
	401	for (i = 0, cp = wp; i < l; ++i, ++cp) {
	402	data = (data << 8) \| ((uchar ) cp);
	403	}
	404	for (; i < port_width && cnt > 0; ++i) {
	405	data = (data << 8) \| *src++;
	406	--cnt;
	407	++cp;
	408	}
	409	for (; cnt == 0 && i < port_width; ++i, ++cp) {
	410	data = (data << 8) \| ((uchar ) cp);
	411	}
	412
	413	if ((rc = write_data (info, wp, SWAP (data))) != 0) {
d407bf52	414	flash_vpp(0);
3d3befa7 WD	415	return (rc);
	416	}
	417	wp += port_width;
	418	}
	419
	420	/*
	421	* handle word aligned part
	422	*/
	423	count = 0;
	424	while (cnt >= port_width) {
	425	data = 0;
	426	for (i = 0; i < port_width; ++i) {
	427	data = (data << 8) \| *src++;
	428	}
	429	if ((rc = write_data (info, wp, SWAP (data))) != 0) {
d407bf52	430	flash_vpp(0);
3d3befa7 WD	431	return (rc);
	432	}
	433	wp += port_width;
	434	cnt -= port_width;
	435	if (count++ > 0x800) {
	436	spin_wheel ();
	437	count = 0;
	438	}
	439	}
	440
	441	if (cnt == 0) {
d407bf52	442	flash_vpp(0);
3d3befa7 WD	443	return (0);
	444	}
	445
	446	/*
	447	* handle unaligned tail bytes
	448	*/
	449	data = 0;
	450	for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) {
	451	data = (data << 8) \| *src++;
	452	--cnt;
	453	}
	454	for (; i < port_width; ++i, ++cp) {
	455	data = (data << 8) \| ((uchar ) cp);
	456	}
	457
d407bf52 WD	458	rc = write_data (info, wp, SWAP (data));
	459
	460	flash_vpp(0);
	461
	462	return rc;
3d3befa7 WD	463	}
	464
	465	/*-----------------------------------------------------------------------
	466	* Write a word or halfword to Flash, returns:
	467	* 0 - OK
	468	* 1 - write timeout
	469	* 2 - Flash not erased
	470	*/
	471	static int write_data (flash_info_t * info, ulong dest, FPW data)
	472	{
	473	FPWV addr = (FPWV ) dest;
	474	ulong status;
	475	int flag;
	476
	477	/* Check if Flash is (sufficiently) erased */
	478	if ((*addr & data) != data) {
0a5676be	479	printf ("not erased at %08lx (%lx)\n", (ulong) addr, (ulong) *addr);
3d3befa7 WD	480	return (2);
3d3befa7 WD	481	}
d407bf52 WD	482
	483	flash_vpp(1);
	484
3d3befa7 WD	485	flash_unprotect_sectors (addr);
	486	/* Disable interrupts which might cause a timeout here */
	487	flag = disable_interrupts ();
	488	addr = (FPW) 0x00400040; / write setup */
	489	*addr = data;
	490
	491	/* arm simple, non interrupt dependent timer */
	492	reset_timer_masked ();
	493
	494	/* wait while polling the status register */
	495	while (((status = *addr) & (FPW) 0x00800080) != (FPW) 0x00800080) {
6d0f6bcf	496	if (get_timer_masked () > CONFIG_SYS_FLASH_WRITE_TOUT) {
3d3befa7	497	addr = (FPW) 0x00FF00FF; / restore read mode */
d407bf52	498	flash_vpp(0);
3d3befa7 WD	499	return (1);
	500	}
	501	}
	502	addr = (FPW) 0x00FF00FF; / restore read mode */
d407bf52	503	flash_vpp(0);
3d3befa7 WD	504	return (0);
	505	}
	506
	507	void inline spin_wheel (void)
	508	{
	509	static int p = 0;
	510	static char w[] = "\\/-";
	511
	512	printf ("\010%c", w[p]);
	513	(++p == 3) ? (p = 0) : 0;
	514	}